Newborns normally have eyebrows at birth, except that some newborns have relatively few and light-colored eyebrows, and parents often think that their children do not have eyebrows when they look at them violently. In fact, the child already has normal eyebrows present. As the child gets older, especially after half a year of age, the child’s eyebrows are thicker and the color and length of the eyebrows are set. Because a child’s eyebrows grow very slowly, unlike hair which grows very quickly, parents need not worry too much. If the child has no other symptoms, such as no deepening of the skin color and developmental deformities, parents only need to observe dynamically, without special treatment.